Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Computation of Basic Earnings and Diluted Earnings Per Share Data

The following table details the reconciliation of basic earnings per share to diluted earnings per share:

	Three Months ended
	March 31,
	2014		2013
Numerator for basic and diluted earnings per share:
Net income	$	11,883	$	8,493
Denominator:
Weighted-average basic common shares outstanding		32,916		31,403
Assumed conversion of dilutive securities:
Stock options		2,584		2,545
Denominator for diluted earnings per share—Adjusted weighted-average shares		35,500		33,948
Earnings per common share:
Basic	$	0.36	$	0.27
Diluted	$	0.33	$	0.25